TO HAVE TWO LEFT FEET
БЫТЬ ПЛОХИМ ТАНЦОРОМ
Explanation:
To be a very bad dancer.
Sorry, I wouldn't like to dance with you - I've got two left feet.
NOT TO HAVE TWO PENNIES TO RUB TOGETHER
БЫТЬ ОЧЕНЬ БЕДНЫМ
Explanation:
To be very poor
When I was a child, my mother didn't have two pennies to rub together.